Back and seat for a chair



FIG. 1 is a perspective view showing the left side, top and front of aback and seat for a chair which forms my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figures illustrate environment that forms nopart of my design.

CLAIM The ornamental design for a back and seat for a chair, as shownand described.